Editing Power Mac G5 (section)

== Introduction ==
Officially launched as part of [[Steve Jobs]]' [[Stevenote|keynote presentation]] at the [[Worldwide Developers Conference]] in June 2003, the Power Mac G5 was introduced with three models, sharing the same physical case, but differing in features and performance. Although somewhat larger than the G4 [[Computer tower|tower]] it replaced, the necessity for a complex cooling system meant that the G5 tower had room inside for only one optical drive and two hard drives.

Steve Jobs stated during his keynote presentation that the Power Mac G5 would reach 3&nbsp;GHz "within 12 months." This would never come to pass; after three years, the G5 only reached 2.7&nbsp;GHz before it was replaced by the Intel [[Xeon]]-based [[Mac Pro]], which debuted with processors running at speeds of up to 3&nbsp;GHz.

During the presentation, Apple also showed [[Virginia Tech]]'s [[macOS|Mac OS X]] [[computer cluster]] [[supercomputer]] (a.k.a. supercluster) known as ''[[System X (supercomputer)|System X]]'', consisting of 1,100 Power Mac G5 towers operating as processing nodes. The supercomputer managed to become one of the top five supercomputers that year. The computer was soon dismantled and replaced with a new cluster made of an equal number of [[Xserve G5]] rack-mounted servers, which also used the G5 chip running at 2.3&nbsp;GHz.